Bits and Tips
Some house cleaning is mandatory here.
There comes the time when you have to do some house cleaning. This shouldn't be allowed to happen. That dust is a tube and an amp killer.
Doctor Mac is going to charge dearly for cleaning those clogged up "lungs"!
If you want to clean up, remember always that there are lethal voltage levels inside an amp even after being disconnected for a long time, close to THREE THOUSAND VOLTS or more in some cases. BE CAREFUL and take all necessary precautions before removing the cover of your amplifier.